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beks73 [17]
3 years ago
15

What direction for negative and positive go in​

Mathematics
2 answers:
skad [1K]3 years ago
8 0

Answer:

negative=left positive=right

Step-by-step explanation:

negatives are less than positives

slega [8]3 years ago
4 0

Answer:

  opposite directions

Step-by-step explanation:

Conventionally, positive is to the right or up. The actual direction depends on the desired coordinate system, and may vary from one context to another.

In spherical coordinates, positive distance measure is away from center. Positive angles of one sort are CCW from the "x direction" as seen from the "north pole" (z-direction), and positive angles of the other sort are away from the axis pointing to the "north pole."

In mechanics, reference points and directions are often chosen to simplify the problem as much as possible. The point of application of an unknown force, for example, may be chosen as a reference point simply so its moment about that point is zero and can be ignored.

___

In navigation on the Earth's surface, bearing angles are generally positive measured clockwise from North. In Algebra, angles are usually positive measured counterclockwise from the +x axis (East on a map conventionally oriented).

___

In conventional 2-dimensional algebra problem coordinates, positive x is to the right, and positive y is up. Angles are positive counterclockwise from the +x axis and negative clockwise from that axis. However, you can define reference points and positive directions any way you like, as long as you make your coordinate system known to anyone interested in your work. Generally, negative coordinates are in the direction opposite positive ones.

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The population of a town increased from 3450 in 2006 to 4650 in 2011. Find the absolute and relative (percent) increase.
netineya [11]

Answer:

15% increase per year.

Step-by-step explanation:

5,600 - 3,500 = 2,100

2,100 is what percent of 3,500?

2,100 = X*3,500

X =  2,100 / 3,500

X = .60 or 60%

An average of 15% increase per year.

4 0
3 years ago
If UW = 25 - 35 and UY = S, find the value
Ghella [55]

What is a feeble minded person?

Definition of feebleminded

1 dated, offensive : impaired in intellectual ability : affected with intellectual disability.

Download pdf
5 0
2 years ago
Read 2 more answers
In order to ensure efficient usage of a server, it is necessary to estimate the mean number
juin [17]

Answer:

a. [36.19;39.21]

b. Reject the null hypothesis. The population mean of users that are connected at the same time is greater than 35.

Step-by-step explanation:

Hello!

Your study variable is,

X: "number of users of one server at a time"

The objective is to estimate the mean, for this, a sample of n=100 times was taken and the standard deviation S= 9.2 and the sample mean is X[bar]= 37.7 were calculated.

You need to study the population mean, for this you need your variable to have at least normal distribution. Since you don't have information about its distribution, but the sample is big enough (n≥30) you can apply the Central Limit Theorem and approximate the distribution of the sample mean X[bar] to normal:

X[bar]≈N(μ;σ²/n)

a. With this approximation, you can construct the 90% Confidence Interval using the approximate Z

[X[bar] ± Z_{1-\alpha /2} * S/√n]

Z_{1-\alpha /2} = Z_{0.95} = 1.64

[37.7± 1.64* 9.2/√100]

[36.19;39.21]

b. You need to test if the population mean is greater than 35 with a level of significance of 1%.

The hypothesis is:

H₀: μ ≤ 35

H₁: μ > 35

α: 0.01

This is a one-tailed test so you have only one critical level (right tail):

Z_{1\alpha } = Z_{0.99} = 2.33

This means that if the value of the calculated statistic is equal or greater than 2.33 you will reject the null Hypothesis.

If the value is less than 2.33 you will support the null hypothesis.

The statistic is:

Z=<u> X[bar] - μ </u>= <u> 37.7 - 35 </u> = 2.93

       S/√n           9.2/10

The value 2.93 > 2.33, so you reject the null hypothesis. This means that the population mean of users that are connected at the same time is greater than 35.

<u><em>Note: </em></u><em>To make the decision using the interval calculated on a), the hypothesis should have been two-tailed and the confidence and significance levels complementary.</em>

I hope it helps!

7 0
3 years ago
The following triangles are similar. Find side AB.
tankabanditka [31]

Answer:

4

Step-by-step explanation:

Set up ratios of corresponding sides.  x+2 is to 6 as 2 is to 3:

\frac{x+2}{6}=\frac{2}{3}

Now cross multiply to get

3(x + 2) = 12 and

3x + 6 = 12 so

3x = 6 and

x = 2.  That means that side AB, x + 2, is 2 + 2 which is 4

4 0
3 years ago
Please help 50 points + Brainliest
Talja [164]

Step-by-step explanation:

AB · BE = CB · BD            Given

CB/BE = AB/BD               Division Property of Equality

<ABC = <DBE                  Vertical angles are equal

ΔABC ≅ ΔDBE                SAS Similarity Theorem


Hope it helps

7 0
3 years ago
Read 2 more answers
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